package com.zhang.sh.controller;

import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.List;
import java.util.Map;

@RestController
public class ConsumerController {

    @Autowired
    RestTemplate restTemplate;
    @Autowired
    DiscoveryClient discoveryClient;


    @GetMapping("user/{username}")
    public Map findUserByUsername(@PathVariable("username")String username){
//        List<ServiceInstance> instances = discoveryClient.getInstances("user-service");  // 大小写都可以
//        ServiceInstance serviceInstance = instances.get(0);
//
//        String host = serviceInstance.getHost();  // 获取主机地址
//        int port = serviceInstance.getPort();     // 获取端口
//        String url = serviceInstance.getUri().toString(); // 获取请求URL
//
//        // String url = "http://localhost:8081/user/" + id;
//        // 调用RestTemplate的getForObject方法，指定url地址和返回值类型
//        Map user = restTemplate.getForObject(url+"/user/"+username, Map.class);
        //负载均衡
        String url = "http://user-service/user/" + username; // user-service 微服务名称
        Map user = restTemplate.getForObject(url, Map.class);
        return user;
    }
}
